* {
  margin: 0;
  padding: 0;
}
body {
  width: 100vw;
  height: 100%;
  overflow-x: hidden;
  background-color: #333333;
  position: relative;
}
.btn {
  width: 200px;
  height: 200px;
  background-color: #ff7979;
  border-radius: 50%;
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  transition: all ease-in-out 0.5s;
  transform: translate(-50%, -50%) rotate(-40deg);
}
.btn > div {
  font-size: 30px;
  position: absolute;
  cursor: pointer;
}
.btn .on {
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
}
.btn .off {
  top: 50%;
  transform: translateY(-50%);
  right: 20px;
}
.container {
  width: 100%;
  height: 100%;
  background-color: #fff;
  transform-origin: top left;
  position: relative;
  z-index: 8;
  transition: all ease-in-out 0.5s;
}
.container .inner {
  font-family: 'Lato', sans-serif;
  color: #333;
  width: 70%;
  margin: 0 auto;
  padding-top: 100px;
  text-align: justify;
}
.container .inner .user {
  color: #555;
  font-style: italic;
  margin-top: 10px;
}
.container .inner .desc {
  margin: 20px 0;
}
.navs {
  position: fixed;
  bottom: 50px;
  left: -200%;
  z-index: 10;
  transition: all ease-in-out 0.5s;
  color: #fff;
}
.navs > div {
  margin: 10px 0;
  cursor: pointer;
}
.active-container {
  transform: rotate(-20deg);
}
.active-btn {
  transform: translate(-50%, -50%) rotate(40deg);
}
.active-nav {
  left: 30px;
}
.active-nav > div:nth-child(1) {
  transform: translateX(10px);
}
.active-nav > div:nth-child(2) {
  transform: translateX(20px);
}
.active-nav > div:nth-child(3) {
  transform: translateX(30px);
}
